<template>
    <div>
        <el-card>
            <el-alert
                    title="添加商品信息"
                    type="info" center :closable="false" show-icon>
            </el-alert>
            <!--            步骤条-->
            <el-steps :space="200" :active="active -0" finish-status="success" align-center>
                <el-step title="基本信息"></el-step>
                <el-step title="商品参数"></el-step>
                <el-step title="商品属性"></el-step>
                <el-step title="商品图片"></el-step>
                <el-step title="商品内容"></el-step>
                <el-step title="完成"></el-step>
            </el-steps>
            <el-form :model="addForm" :rules="addFormRules" ref="addForm" label-width="100px" label-position="top">
                <el-tabs v-model="active" :tab-position="'left'" :before-leave="beforeTabLeave" @tab-click="tabClicked">
                    <el-tab-pane label="基本信息" name="0">
                        <el-form-item label="商品名称" prop="goods_name">
                            <el-input v-model="addForm.goods_name"></el-input>
                        </el-form-item>
                        <el-form-item label="商品价格" prop="goods_price">
                            <el-input v-model="addForm.goods_price" type="number"></el-input>
                        </el-form-item>
                        <el-form-item label="商品重量" prop="goods_weight">
                            <el-input v-model="addForm.goods_weight" type="number"></el-input>
                        </el-form-item>
                        <el-form-item label="商品数量" prop="goods_num">
                            <el-input v-model="addForm.goods_number" type="number"></el-input>
                        </el-form-item>
                        <el-form-item label="商品分类" prop="goods_cat">
                            <el-cascader
                                    v-model="addForm.goods_cat"
                                    :options="cateList"
                                    :props="{ expandTrigger: 'hover',label:'cat_name',value:'cat_id' ,children:'children'}"
                                    @change="handleChange"></el-cascader>
                        </el-form-item>
                    </el-tab-pane>
                    <el-tab-pane label="商品参数" name="1">
                        <el-form-item :label="item.attr_name" v-for="(item ,index) in manyTableData" :key="item.attr_id">
                            <el-checkbox-group v-model="item.attr_vals">
                                <el-checkbox :label="cb" v-for="(cb,i) in item.attr_vals" :key="i" border></el-checkbox>

                            </el-checkbox-group>
                        </el-form-item>
                    </el-tab-pane>
                    <el-tab-pane label="商品属性" name="2">
                        <el-form-item :label="item.attr_name" v-for="item in onlyTableData" :key="item.attr_id">
                            <el-input v-model="item.attr_vals"></el-input>
                        </el-form-item>
                    </el-tab-pane>
                    <el-tab-pane label="商品图片" name="3">
                        <el-upload

                                :action="uploadUrl"
                                :headers="headerObj"
                                :on-preview="handlePreview"
                                :on-remove="handleRemove"
                                :on-success="handleSuccess"
                                list-type="picture">
                            <el-button size="small" type="primary">点击上传</el-button>
                            <div slot="tip" class="el-upload__tip">只能上传jpg/png文件，且不超过500kb</div>
                        </el-upload>
                    </el-tab-pane>
                    <el-tab-pane label="商品内容" name="4">
                        <quill-editor
                                v-model="addForm.goods_introduce"
                        />
                        <el-button type="primary" class="btnAdd" @click="add">添加商品</el-button>
                    </el-tab-pane>

                </el-tabs>
            </el-form>
        </el-card>
        <el-dialog
                title="图片预览"
                :visible.sync="dialogVisible"
                width="50%">
           <img :src="previewPath" style="width: 100%"/>
        </el-dialog>
    </div>
</template>

<script>
    export default {
        data() {
            return {
                dialogVisible:false,
                previewPath:'',
                headerObj:{
                    Authorization:window.sessionStorage.getItem("token")
                },
                uploadUrl:'https://www.liulongbin.top:8888/api/private/v1/upload',
                active: '0',
                addForm: {
                    goods_name: '',
                    goods_price: 0,
                    goods_weight: 0,
                    goods_number: 0,
                    goods_cat:[],
                    pics:[],
                    goods_introduce:'',
                    attrs:[]

                },//添加商品的表单对象
                cateList: [],
                manyTableData:[],
                onlyTableData:[],
                addFormRules: {
                    goods_name: [
                        {required: true, message: '请输入商品名称', trigger: 'blur'}
                    ],
                    goods_price: [
                        {required: true, message: '请输入商品价格', trigger: 'blur'}
                    ],
                    goods_weight: [
                        {required: true, message: '请输入商品重量', trigger: 'blur'}
                    ],
                    goods_number: [
                        {required: true, message: '请输入商品数量', trigger: 'blur'}
                    ],
                    goods_cat:[
                        {required: true, message: '请选择商品分类', trigger: 'blur'}
                    ]
                }
            }

        },
        created() {
            this.getCateList()
        },
        methods: {
            //处理图片预览
            handlePreview(file){
                console.log(file)
                this.previewPath=file.response.data.url
                this.dialogVisible=true
            },
            //处理移除图片的操作
            handleRemove(file){
                const filePath=file.response.data.tmp_path
                const i= this.addForm.pics.findIndex(x=>x.pic==filePath)
                this.addForm.pics.splice(i,1)
            },
            //监听图片上传成功
            handleSuccess(res){
                const info={pic:res.data.tmp_path}
                this.addForm.pics.push(info)
            },
           async  tabClicked(){
                //动态参数面板
                if(this.active=='1'){
                    const {data: res} = await this.$http.get(`categories/${this.cateId}/attributes`, {params: {sel: 'many'}});
                    if(res.meta.status!==200){
                        return this.$message.error('获取动态参数列表失败');
                    }else{
                        res.data.forEach(item=>{
                            item.attr_vals=item.attr_vals.length!=0?item.attr_vals.split(','):[]
                        })
                        this.manyTableData=res.data
                    }
                }
                if(this.active=='2'){
                    const {data: res} = await this.$http.get(`categories/${this.cateId}/attributes`, {params: {sel: 'only'}});
                    if(res.meta.status!==200){
                        return this.$message.error('获取静态属性列表失败');
                    }else{
                        this.onlyTableData=res.data
                    }
                }
            },
            handleChange(){
                console.log(this.addForm.goods_cat)
                if(this.addForm.goods_cat.length!==3){
                    this.addForm.goods_cat=[]
                }
            },
            beforeTabLeave(activeName,oldActiveName){
                if(oldActiveName==='0'&&this.addForm.goods_cat.length!==3){
                    this.$message.error('商品分类未选')
                    return false
                }

            },
            async getCateList() {
                const {data: res} = await this.$http.get('categories');
                if (res.meta.status != 200) {
                    return this.$message.error("获取分类失败")
                } else {
                    this.cateList = res.data;
                }
            },
            add(){
                this.$refs.addForm.validate( async valid=>{
                    if(!valid){
                        return this.$message.error('请填写必填的表单项')
                    }else{
                        console.log(this.manyTableData)
                        console.log(this.onlyTableData)
                       const form= JSON.parse(JSON.stringify(this.addForm))
                        form.goods_cat=form.goods_cat.join(',')
                        this.manyTableData.forEach(item=>{
                            const newInfo={attr_id:item.attr_id,attr_value:item.attr_vals.join(',')}
                            this.addForm.attrs.push(newInfo)
                        })
                        this.onlyTableData.forEach(item=>{
                            const newInfo={attr_id:item.attr_id,attr_value:item.attr_vals.join(',')}
                            this.addForm.attrs.push(newInfo)
                        })
                        form.attrs=this.addForm.attrs
                        const {data: res} = await this.$http.post('goods', form);
                       if(res.meta.status!=201){
                           return this.$message.error('添加商品失败')
                       }else{
                            this.$message.error('添加商品成功')
                            this.$router.push("/goods")
                       }

                    }
                })
            }
        },
        computed:{
            cateId(){
                if(this.addForm.goods_cat.length===3){
                    return this.addForm.goods_cat[2]
                }else{
                    return null
                }
            }
        }
    }
</script>

<style lang="less" scoped>
    .btnAdd{
        margin-top:15px
    }
</style>